PY264
8K
X
8 REPROGRAMMABLE PROM
FEATURES
EPROM Technology for reprogramming
High Speed
– 35/45/55 ns (Commercial)
– 35/45/55 ns (Military)
Low Power Operation:
– 660 mW Commercial
– 770 mW Military
Single 5V±10% Power Supply
Windowed devices for reprogramming
Fully TTL Compatible Inputs and Outputs
Standard Pinout (JEDEC Approved):
– 24-Pin 600 mil Windowed CERDIP
– 24-Pin 600 mil Non-Windowed Plastic DIP
DESCRIPTION
The PY264 is an 8Kx8 CMOS PROM. The device is
available in windowed packages which when exposed to
UV light, the memory content in the PROM is erased and
can be reprogrammed. EPROM technology is used in
the memory cells for programming. The EPROM re-
quires a 12.5V for programming. Devices are tested to
insure that performance of the device meets the DC and
AC specification limits after customer programming.
To perform a read operation from the device,
CS
is LOW.
The memory contents in the address established by the
Address pins (A
0
to A
12
) will become available on the
outputs (O
0
to O
7
).
The PY264 is available in 24-pin 600 mil Ceramic DIPs
(Windowed) and Plastic DIPs (Non-Windowed).
FUNCTIONAL BLOCK DIAGRAM
PIN CONFIGURATION
DIP (P8, WD2)
Note: Window on
WD2 package only
Document #
EPROM102
REV OR
1
Revised July 2007
PYRAMID [ PYRAMID SEMICONDUCTOR CORPORATION ]
